def myfunc(a, b):
    # print(a, b)
    return a + b
    print('xxx') # 不会执行
    return '333' # 后边的return 是不能执行的

# myfunc(1, 3)
print(myfunc(1, 3))

def calculate(a, b):
    he = a + b
    cha = a - b
    return (he ,cha) 
print(calculate(2,1))

he,cha = calculate(2,1)
print(he)
print(cha)



